David Y C Hu

6944653, Sep 13, 2005

Sep 14, 2001

09/953396

Ryan Patrick Fong - Castro Valley CA, US
David J. Hu - Union City CA, US

Hewlett-Packard Development Company, L.P. - Houston TX

E06F015/177
H04L012/28

709220, 709221, 370254, 370255

A method and computer network to autonomously deploy a group of data processing systems without human user interaction. One embodiment of the invention involves a method to deploy one or more data processing systems without human intervention. A second embodiment of the invention involves a computer network to facilitate the intelligent deployment of one or more data processing systems without human intervention. A third embodiment of the invention involves a computer program embodied on an electronically-readable media, containing instructions to deploy one or more data processing systems without human intervention.

6977838, Dec 20, 2005

Feb 17, 2004

10/781482

David Tsang - Cupertino CA, US
Xizeng Shi - Fremont CA, US
Po-Kang Wang - San Jose CA, US
David Hu - Los Altos CA, US

Applied Spintronics Technology, Inc. - Milpitas CA
Headway Technologies - Milpitas CA

G11C011/00

365158, 365191

A method and system for providing a magnetic memory are disclosed. The method and system include providing a plurality of magnetic memory cells and at least one programmable current source. Each of the plurality of magnetic memory cells includes a first magnetic element. The programmable current source(s) are for programming a portion of the plurality of magnetic memory cells. Each of the programmable current source(s) includes a controller and a current source coupled to the controller. The controller is for determining a current provided by the current source and includes at least a second magnetic element. The second magnetic element(s) are substantially the same as the first magnetic element. The controller determines the current provided by the current source based on the at least the second magnetic element.

7042670, May 9, 2006

Jul 11, 2003

10/618145

Zhu Feng - Pleasanton CA, US
Ellis Cha - San Ramon CA, US
David Hu - Los Altos CA, US
Yen Fu - San Jose CA, US

SAE Magnetics (H.K.) Ltd. - Shatin

G11B 5/60

360 75

A system and method for adjusting the flying height of a magnetic head above a magnetic storage medium, such as a disk, is disclosed. A charging electrical pad may be coupled to the slider separate from the magnetic head to allow a charging electrical conductor to apply an electrical charge to the slider. By acting as a quasi-parallel capacitor, the amount of spacing in the head-disk interface may be increased or decreased based on the amount of voltage applied. The slider may be electrically isolated from the suspension. A feedback control system may monitor and control the head-disk spacing by measuring temperature or other environmental conditions surrounding the slider and disk.

7385789, Jun 10, 2008

Apr 30, 2004

10/835787

David Hu - Los Altos CA, US
Moris Dovek - San Jose CA, US
Kowang Liu - Fremont CA, US

Headway Technologies, Inc. - Milpitas CA

G11B 21/21
G11B 5/56
G11B 5/58

3602947

In order to obtain improved magnetic track density, it is desirable to bring the read and write elements as close to the recording surface as possible, short of actually touching it. This has been achieved by utilizing a magnetostrictive actuator, comprising single or multiple pairs of magnetostrictive elements and their associated conductor coils. A magnetic field is generated by passing electrical current through the conductor coils. This field will saturate the actuator and cause the magnetostrictive elements to contract or expand, thus moving the read/write element whenever so desired.

7392579, Jul 1, 2008

Mar 7, 2005

11/074251

Eric Cheuk Wing Leung - Kowloon, HK
Anthony Wai Yuen Lai - Tokwawan, HK
Pak Kin Wong - Tsuen Wan, HK
David Hu - Los Altos CA, US
Moris Dovek - San Jose CA, US
Rod Lee - San Jose CA, US

Headway Technologies, Inc. - Milpitas CA
SAE Magnetics (HK) Ltd. - Shatin, N.T.

G11B 5/127
H04R 31/00

2960316, 2960311, 2960313, 2960315, 2960318, 216 62, 216 66, 216 67, 360122, 360317, 360323, 451 5, 451 41

A slider mounted CPP GMR or TMR read head sensor is protected from electrostatic discharge (ESD) damage and from noise and cross-talk from an adjacent write head by means of a balanced resistive/capacitative shunt. The shunt includes highly resistive interconnections between upper and lower shields of the read head and a grounded slider substrate and a low resistance interconnection between the lower pole piece of the write head and the substrate. The capacitances between the pole piece and the upper shield, the upper shield and the lower shield and the lower shield and the substrate are made equal by either forming the shields and pole piece with equal surface areas and separating them with dielectrics of equal thicknesses, or by keeping the ratio of area to insulator thicknesses equal.

7580218, Aug 25, 2009

Sep 1, 2005

11/217872

Lou Shrinkle - Leucadia CA, US
David Hu - Los Altos CA, US
Peter Crill - Encinitas CA, US
Matthew Yee - Milpitas CA, US

Headway Technologies, Inc. - Milpitas CA

G11B 5/596

360 7704, 360 7708

A method for operating a head testing apparatus (spin stand) using a mounted hard disk that has had its servo track information pre-written in an external servo-writing apparatus rather than in the testing apparatus itself. This insures more accurate servo-track writing and renders the testing operation more efficient. The problem of repeatable runout (RRO) associated with the transfer of a disk written in one machine to another is eliminated by forming a corrected position error signal (PES) by subtracting the average offset of one or more servo sector locations previously calculated using limited bandwidth operation of the servomechanism, from the position error signal generated during full bandwidth servo operation of the apparatus.

7672073, Mar 2, 2010

Feb 14, 2008

12/070285

Lou Shrinkle - Leucadia CA, US
Peter Crill - Encinitas CA, US
Matthew Yee - Milpitas CA, US
David Hu - Los Altos CA, US

Headway Technologies, Inc. - Milpitas CA

G11B 27/36
G11B 5/596

360 31, 360 7704, 360 7708, 360 7804

A method for operating a head testing apparatus or, more generally, a host hard disk drive using a mounted hard disk that has had its servo track information pre-written in an external servo-writing apparatus rather than in the head testing or host apparatus itself. The method eliminates repeatable errors and repeatable runout by effectively replacing the pre-written servo tracks, which are eccentric, with new track profiles that are tracked like circular tracks. The problem of repeatable errors is caused by repeatable runout superimposed upon written-in position errors when a disk written in one machine is transferred to another. This problem is eliminated by forming IRON (Iterative Repeatable Runout Nulling) profile tracks from the initially pre-written servo tracks, where the IRON profile tracks are effectively tracked as concentric circular tracks and generate no PES. The IRON profile is formed by an iterative method that starts with the measurement of the PES of one of the pre-written tracks and iteratively forms a new track profile that is effectively circular.

7727473, Jun 1, 2010

Oct 17, 2006

11/582651

Jesus Ching - San Jose CA, US
David Hsiang Hu - Palo Alto CA, US
Steve Jia Chang Yu - San Jose CA, US
Phillip You Fai Lee - San Francisco CA, US

Progentech Limited

G01N 1/18
C12M 1/34

422 681, 422 63, 422100, 422101, 422102, 422104, 435 6, 4352872, 4352886, 4353061, 436 53

A cassette for preparing a sample is disclosed herein. The cassette includes a housing, which encloses the structures and the processes used to prepare the sample.